Remove swig and unused PGP keys
Some PGP keys (LXML, PYTHON, M2CRYPTO, flashproxy) are no longer needed because the software they are for has been removed.
swig was only needed for the m2crypto build.
Some PGP keys (LXML, PYTHON, M2CRYPTO, flashproxy) are no longer needed because the software they are for has been removed.
swig was only needed for the m2crypto build.